PROGRAM
4th IASME / WSEAS International Conference on
FLUID MECHANICS and AERODYNAMICS
Elounda, Agios Nikolaos, Crete Island, Greece, August 21-23, 2006
The 4th IASME / WSEAS International Conference on FLUID MECHANICS and AERODYNAMICS is sponsored by WSEAS and IASME as well as by WSEAS Transactions on Fluid Mechanics, WSEAS Transactions on Heat and Mass Transfer, WSEAS Transactions on Environment and Development. Organized by WSEAS Working Group on Fluid Mechanics, WSEAS Working Group on Heat and Mass Transfer and WSEAS Working Group on Environment and Development.
Monday, August 21, 2006
PLENARY LECTURE 1
Conservative Averaging as a Special Method for PDE (Partial Differential Equations) with Discontinuous Coefficients
Professor Andris Buikis
University of Latvia
Full member of Latvian Academy of Sciences
Director of Science and Dialogue Center of Latvia
Latvia
Abstract: By modeling practically interesting processes, very often we need consider the situation, when the medium has a layered structure. Speaking mathematically, such situation can be described by PDE (or its system) with piecewise constant/continuous coefficients. In this talk I’ll show how conjugations conditions, non-ideal contact conditions etc. and their generalizations can be obtained by our original method of conservative averaging (CAM). The usage of CAM for separate relatively thin sub-domain or/and for sub-domain with large medium characteristic, leads to reduction of domain, in which the solution must be found. To apply CAM procedure for several layers, it is necessary to construct special type of polynomial and rational spline: which interpolates the integral averaged values of the solution. In this case the original problem with discontinuous coefficients from transforms to problem with continuous coefficients in . The usage of CAM for ill-posed inverse problems in some cases transforms them to well-posed inverse problems.
PLENARY LECTURÅ 2
Turbulence and the Dynamics of Flows: Ideas, Advances, and Challenges
Professor Haris J. Catrakis
University of California
Irvine, USA
Abstract: Ideas, advances, and challenges in turbulence and the dynamics of flows are described with emphasis on basic problems as well as applications. Basic issues addressed include the behavior of diffusive and refractive turbulent fields and interfaces, the distribution of scales in fully-developed turbulence, the dependence of the flow behavior on scale, fractal aspects of turbulence, physical properties of large-Reynolds-number interfaces, large-scale dynamics, small-scale behavior, intermittency, and flow optimization. Applied issues examined include multiresolution aspects of turbulent diffusion, the mixing efficiency of turbulent flows, robustness in turbulence, the propagation of optical wavefronts through refractive turbulent flows, the interfacial-fluid-thickness approach in aero-optics, laser beam propagation in turbulent flows, and optimization of aero-optical interactions for directed energy systems. New perspectives and prospects for theories, experiments, and computations on fundamental and applied aspects of turbulence and the dynamics of flows are discussed.
PLENARY LECTURÅ 3
Application of Non-Equilibrium Thermodynamics to the Estimation of the Diffusion Coefficients in Polymer Solutions
Professor George D. Verros
Department of Electrical Engineering
Technological & Educational Institute (T.E.I.) of Lamia
35100 LAMIA
GREECE
verros@eng.auth.gr
Abstract: Polymeric asymmetric membrane and coating formation by solvent evaporation are industrial processes of major financial and scientific interest. There are many issues though that need to be addressed, in order to obtain a complete picture of the evaporation process, that leads to a better understanding of the underlying physics and consequently to the optimization of the process as well as to the production of membranes and coatings with desired properties.
One of the most important issues of the process is the estimation of diffusion coefficients in the polymeric solution as they affect the membrane morphology and have an unoverlooked impact on the quality of the final product. The aim of the present work is to apply fundamental principles of non-equilibrium thermodynamics to the estimation of the diffusion coefficients. For this purpose the evaporation process is modeled as a coupled one dimensional heat & mass transfer problem with a moving boundary. Equilibrium is assumed at the gas phase-polymer solution interface. The Galerkin Finite Element method is used to solve simultaneously the non-linear governing equations. The numerical technique yields by comparison with gravimetric data the diffusion coefficients over a wide range of temperature and composition. The estimated diffusion coefficients based on free volume theory are in satisfactory agreement with the available experimental data. This allows a thorough study of the effect of process conditions such as polymer solution composition or the initial temperature on the membrane or coating morphology.
SESSION: Advances in Aerodynamics
Chair: S. Özgen, Luo Xingqi
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Evaluation of Surface Finish Affect on Aerodynamic Coefficients of Wind Tunnel Testing Models |
S. Daneshmand , R. Adelnia , S. Aghanajafi |
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The influence of tip clearance on centrifugal compressor stage of a turbocharger |
Syed Noman Danish, Ma Chaochen, Yang Ce |
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Evaluating Aerodynamic Characteristics of Wind-Tunnel Models Produced by Selective Laser Sintering Method |
S. Daneshmand, R. Adelnia, S. Aghanajafi |
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Aerodynamic Performance of a typical high-speed train |
Alexander Orellano, Martin Schober |
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Slipstream Velocities Induced by Trains |
Marco Weise, Alexander Orellano, Martin Schober |
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Finding The Optimum Angle Of Attack For The Front Wing Of An F1 Car Using CFD |
J. Jagadeep Reddy,Mayank Gupta |
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Aerodynamic study and control of instabilities of the initial zone of the annular jet by acoustic excitations or modification of the central obstacle. |
B.Patte-Rouland, A.Danlos, E.Rouland, P.Paranthoen |
SESSION: Numerical analysis and simulation
Chair: F. Gallerano, M. Sohrab
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A numerical Study of the Tear Flim Rupture |
Asad A. Salem |
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A two dimensional unstructured staggered mesh method with special treatment of tangential velocity |
Mehmet Shala, Koulis Pericleous, Mayur Patel |
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Double fins decelerator for blunt body in turbulent flows |
Khaled Alhussan |
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Calculation of 2D Velocity Field in Supercavitating Flow by Combination of Slender Body Theory and BEM |
N.M. Nouri, A. Eslamdoost, M. Moghimi, A. Shienezhad |
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Consideration of 2D Unsteady Boundary Layer Over Oscillating Flat Plate |
N.M. Nouri, H.R. Ahmadifakhr |
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Interaction between Boundary Layer and Shock in Hypersonic Flows with chemical real gas effects |
N. Jahantigh , M.Mirzaei , A. Shadaram |
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Experimental and Numerical Study of the Effect of Openings on the Surface Pressure Distribution of a Hollow Cube |
Melina Petridou, Demetri Bouris |
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Gas-Liquid Interface Displacement: Numerical and experimental comparative analysis for carbon dioxide diffusion into n-decane |
Damelys Zabala , Aura L. López de Ramos |
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Contribution to numerical study of 2D free-surface waveless flow |
Bouzelha-Hamoum Karima, Bouhadef Malek, Zitoun Tahar |
Tuesday, August 22, 2006
SESSION: Flow topology and vortex method
Chair: Serkan Ozgen, D. Bouris
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Combination of Extended Random Vortex and Boundary Element Methods for Flat Plate Flow |
N.M. Nouri, H. Madadi, H.R. Ahmadi Fakhr, M. Moghimi |
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A comparison between asymmetric and symmetric vortex mergers |
Mei-Jiau Huang |
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New Aspect to Random Vortex Method Description, Base on Multiple Scale Method |
Nowrouz Mohammad Nouri, Ali Sarreshtehdari |
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Dynamic Excitation Analysis of Laminar Boundary Layer via extended RVM by vortex filament of Finite Length |
N.M. Nouri, H. Madadi, M. Moghimi |
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Theoretical and Numerical Study of Vortex-Wake Flow |
Khaled Alhussan |
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Vortical flow topology in a curved duct with 90 degree bend |
Tony W. H. Sheu, S. F. Tsai |
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Boundary conditions for low Mach number reacting flows |
Robert Prosser |
SESSION: Fluid dynamics and modelling
Chair: F. Gallerano, M. El Hayek
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Implicit Stabilization Method for Numerical Modeling of Fluid Dynamics Problems |
Vladimir Artemyev |
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Flow Between Two Almost Rigidly Rotating Spheres |
Vassilios C. Loukopoulos |
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Prediction of Liquid Jet Pump Performance Using Computational Fluid Dynamics |
M.D. El Hayek, A.H. Hammoud |
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Development of irregular-grid finite difference method (IFDM) for governing equations in strong form |
G. R. Liu and George Xu |
pp154-159 |
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Generalized Combined Compact Differencing Method |
Sarmad Ghader and Vahid Esfahanian |
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A Study of the Frequency Reponse of Pressure Mechanical Transducer by Using Finite Elements Method |
Coman Adrian-Viorel, Moldovan Elena |
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Importance of the Navier-Stokes Forces on the Flow in a Hydrodynamic Torque Converter |
Matthias Wollnik, Werner Volgmann, Horst Stoff |
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Modelling of Pipelines in State-Space |
Drago Matko, Gerhard Geiger, Maja Atanasijevic-Kunc |
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Reduced order modelling of compound fluid transmission line systems |
Bernhard Manhartsgruber |
SESSION: Flow theory and analysis
Chair: Siavash H. Sohrab, Serkan Ozgen,
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A Modified Hydro-Thermo-Diffusive Theory of Laminar Premixed Flames |
Siavash H. Sohrab |
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Modified Theory of Laminar Flow Around Rigid and Liquid Cylinders |
Friedrich K. Benra and Siavash H. Sohrab |
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Computational Analysis of Multi-Stream Turboshaft Engine Exhaust |
Ali Ozel, Firat Oguz Edis |
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An Analysis of the Mixing and Diffuse Burning Processes in the Afterburning Chamber of a Scramjet |
Coman Adrian-Viorel, Boscoianu Mircea |
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High speed Couette-Poiseuille flow stability in reverse flow conditions |
Ali Aslan Ebrinc, Serkan Ozgen, Zafer Dursunkaya |
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Mode Coalescence in Two-Fluid Boundary Layer Stability |
Serkan Özgen |
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Periodic perturbation on backward-facing step flows at moderate Reynolds numbers |
Sirod Sirisup, Montri Maleewong |
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An Improved Smoke-Wire Flow Visualization Technique |
Sharul Sham Dol, Mohd Arief Mohd Nor, Muhamad Khairun Kamaruzaman |
SESSION: Flow dynamics, hydraulic systems and pumps
Chair: A. Salem
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Slurry Jet Pump Performance: Under Different Design and Operational parameters |
Ali Hammoud, A. Abdel Nabi |
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Effect of design and operational parameters on jet pump performance |
A.H. Hammoud |
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Near and far field experimental investigation on the structure of an isothermal lobed jet |
Ilinca Nastase, Amina Meslem and Iolanda Colda |
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Effect of mean radius to channel width ratio on the flow performance of spiral channel viscous micropump |
Ala'aldeen Al-Halhouli, Mohammad Kilani, Ahmad Al-salaymeh, Stephanus Büttgenbach |
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Optimization Method for Centrifugal Pump Impellers:Coupling of Hybrid Genetic Optimization and Potential Flow solver |
Nikolas Antonakis, Ronald Dijkers, Remko Westra |
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A methodology to investigate the dynamic characteristics of esp hydraulic units - part I: hydraulic tests |
Aldo Sorniotti, Nikos E. Mastorakis |
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A methodology to investigate the dynamic characteristics of esp hydraulic units - part 2: hardware-in-the-loop tests |
Aldo Sorniotti, Nikos E. Mastorakis |
Wednesday, August 23, 2006
SPECIAL SESSION: Investigation on the time-variant flow in Turbomachines
Organized by Prof. Dr.-Ing. F.-K. Benra, University of Duisburg-Essen, Germany.
Chair: Prof. Dr.-Ing. F.-K. Benra
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Numerical investigation of the flow instabilities in centrifugal fan |
Branimir Matijasevic, Stanislav Sviderek, Tihomir Mihalic |
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Numerical Study on Impeller-Diffuser Interactions with Radial Gap Variation |
Jianjun Feng, Friedrich-Karl Benra, Hans Josef Dohmen |
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Modeling turbulent swirling flows in gas turbine combustors with transient three-dimensional procedures |
A. C. Benim, A. Nahavandi, P. J. Stopford, K. J. Syed |
pp295-300 |
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Rotor-Stator-Interaction of a Radial Centrifugl Pump Stage with Minimum Stage Diameter |
H. Roclawski, D.-H. Hellmann |
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Vibration damping of hydraulic turbine unit —case study for Yantan Hydropower Plant |
Luo Xingqi, Guo Pengcheng, Liao Weili, Zheng Xiaobo, Lu Peng |
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Effect of blade geometric parameters on the operating stability of the hydraulic turbine |
Guo Pengcheng, Luo Xingqi, Liao Weili, Zheng Xiaobo, Lu Peng |
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Part-load flow instabilities in a radial pump measured with TR-PIV |
Nico Krause Elemer Pap Dominique Thevenin |
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Measurement of the periodic unsteady flow in a Single-Blade Centrifugal Pump by PIV-Method |
Marcel Zwingenberg, Friedrich-Karl Benra |
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Experimental Investigation of Transient Hydrodynamic Forces of a Single-Blade Centrifugal Pump |
Nicolas Savilius, Friedrich-Karl Benra |
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Conservation Law of Centrifugal Force and Mechanism of Energy Transfer Caused in Turbomachinery |
Takaharu Tanaka |
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Numerical Simulation of Transient Flow and Head Distribution through a Single Blade Centrifugal Pump Impeller |
John Daly, Brian de Souza, Andrew Niven, Patrick Frawley |
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Numerical Simulation of Transient flow through Single Blade Centrifugal Pump Impellers with Tipgap Leakage |
Brian de Souza, John Daly, Andrew Niven, Patrick Frawley |
SESSION: Fluid models and applications
Chair: Haris Catrakis
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Multiscale Synthetic Computational Modeling of Turbulent Fluid Interfaces |
Yekaterina Pavlova and Haris Catrakis |
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Analytical Modelling and Shape Optimization of a Floating Breakwater |
Ghassan EL Chahal, Rafic Younes, Pascal Lafon |
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Application of swirl generators to enhace performance of waterheads on liquid coolers |
Shyan-fu Chou, Chia-chien Chu |
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Comparison of a two-dimensional viscid and inviscid model for rotating stall analysis |
Svetlana Ljevar, Rick de Lange, Anton van Steenhoven |
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Large eddy simulation of re-suspension of solid particles from an erodible bed |
Francesco Gallerano, Lavinia Melilla, Giovanni Cannata, |
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A new dynamic k-e subgrid scale model |
Francesco Gallerano, Giovanni Cannata, Lavinia Melilla |
SPECIAL SESSION: Environmental modelling and protection
Organized by Prof. Gurumurthy Vijayan Iyer, MNM Jain Engineering College, Virugambakkam, INDIA.
Chair: Gurumurthy Vijayan Iyer
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Strategies for the Optimum Utilization of Energy Resources Towards Sustainable Energy Development |
Gurumurthy Vijayan Iyer, Nikos E. Mastorakis |
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Unsafe Chromium from Cotton Ginneries and Development of An Eco-friendly Alternative |
Gurumurthy Vijayan Iyer, Nikos E. Mastorakis |
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Energy Conservation Measures in Dairy Industries |
Gurumurthy Vijayan Iyer, Nikos E. Mastorakis |
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Experimental Investigations on Eco-Friendly Refrigeration and Air Conditioning Systems |
Gurumurthy Vijayan Iyer, Nikos E. Mastorakis |